Editing May 22 (section)

===1901–present===
*[[1905]] &ndash; The [[Sultan of the Ottoman Empire]] [[Abdul Hamid II]] establishes the [[Ullah millet]] for the [[Aromanians]] of the empire. For this reason, the [[Aromanian National Day]] is sometimes celebrated on this day,<ref name="aro">{{cite journal|url=https://www.academia.edu/34296221|title=The ethnicity of Aromanians after 1990: the identity of a minority that behaves like a majority|first=Thede|last=Kahl|author-link=Thede Kahl|journal=Ethnologia Balkanica|volume=6|pages=145–169|year=2002}}</ref> although most do so on [[May 23]] instead, which is when this event was publicly announced.<ref>{{cite news|url=http://www.armanami.org/blog/nikola-minov-why-dont-all-aromanians-celebrate-may-23-as-their-national-day/|title=Nikola Minov: Why don't all Aromanians celebrate May 23 as their national day?|publisher=[[Trâ Armânami Association of French Aromanians]]|date=24 May 2020|access-date=27 November 2020}}</ref>
*[[1906]] &ndash; The [[Wright brothers]] are granted U.S. patent number 821,393 for their "[[Airplane|Flying-Machine]]".
*[[1915]] &ndash; [[Lassen Peak]] erupts with a powerful force, the only volcano besides [[Mount St. Helens]] to erupt in the contiguous U.S. during the 20th century.
*  1915   &ndash; Three trains collide in the [[Quintinshill rail disaster]] near [[Gretna Green]], Scotland, killing 227 people and injuring 246.
*[[1926]] &ndash; [[Chiang Kai-shek]] replaces the communists in [[Kuomintang]] China.{{Vague|date=May 2024}}
*[[1927]] &ndash; Near [[Xining]], China, an 8.3 magnitude [[1927 Gulang earthquake|earthquake]] causes 200,000 deaths in one of the world's most destructive earthquakes.
*[[1939]] &ndash; [[World War II]]: Germany and Italy sign the [[Pact of Steel]].
*[[1941]] &ndash; During the [[Anglo-Iraqi War]], British troops take [[Fallujah]].
*[[1942]] &ndash; [[History of Mexico#"Revolution to evolution", 1940–1970|Mexico enters the Second World War]] on the side of the Allies.
*[[1943]] &ndash; [[Joseph Stalin]] disbands the [[Comintern]].
*[[1947]] &ndash; [[Cold War]]: The [[Truman Doctrine]] goes into effect, aiding Turkey and Greece.
*[[1948]] &ndash; Finnish President [[J. K. Paasikivi]] releases [[Yrjö Leino]] from his duties as [[Minister of the Interior (Finland)|interior minister]] in 1948 after the [[Parliament of Finland|Finnish parliament]] adopted a motion of censure of Leino with connection to his illegal handing over of nineteen people to the [[Soviet Union]] in 1945.<ref>{{cite news |url=http://www.spiegel.de/spiegel/print/d-44417003.html|title=Nach tschechischem Vorbild |trans-title=According to the Czech model |date=29 May 1948|publisher=[[Der Spiegel]] |volume=22 }}</ref><ref>{{cite book |first=Olli |last=Leino |url=https://books.google.com/books?id=AiMOAQAAIAAJ&q=Olle+Leino,+%22Kuka+oli+Yrjö+Leino%22 |title=Kuka oli Yrjö Leino |trans-title=Who was Yrjö Leino? |date=1973 |location=Helsinki |publisher=Tammi |isbn=9513026523 }}</ref><ref>"Paasikiven päiväkirjat I, 1944-1948" ("The Diaries of President J.K. Paasiki Vol. I, 1944-1948"), published 1985, Seppo Zetterberg et al., Ed., "Suomen historian pikkujättiläinen" ("The Little Giant of Finnish History"), 2003</ref>
*[[1957]] &ndash; South Africa's government approves of [[apartheid|racial separation]] in universities.
*[[1958]] &ndash; The [[1958 riots in Ceylon]] become a watershed in the race relations of various ethnic communities of Sri Lanka. The total deaths are estimated at 300, mostly [[Tamils]].
*[[1960]] &ndash; The [[1960 Valdivia earthquake|Great Chilean earthquake]], measuring 9.5 on the [[moment magnitude scale]], hits southern [[Chile]], becoming the most powerful earthquake ever recorded.
*[[1962]] &ndash; [[Continental Airlines Flight 11]] crashes in [[Unionville, Missouri]] after bombs explode on board, killing 45.
*[[1963]] &ndash; Greek left-wing politician [[Grigoris Lambrakis]] is clubbed over the head, causing his death five days later.
*[[1964]] &ndash; U.S. President [[Lyndon B. Johnson]] launches his [[Great Society]] program.
*[[1967]] &ndash; Egypt closes the [[Straits of Tiran]] to Israeli shipping.
*  1967   &ndash; [[L'Innovation Department Store fire|L'Innovation]] department store in [[Brussels]], Belgium, burns down, resulting in 323 dead or missing and 150 injured, the most devastating fire in Belgian history.
*[[1968]] &ndash; The nuclear-powered [[submarine]] {{USS|Scorpion|SSN-589|6}} sinks with 99 men aboard, 400 miles southwest of the [[Azores]].
*[[1969]] &ndash; [[Apollo 10]]'s [[Apollo Lunar Module|Lunar Module]] flies within {{convert|8.4|nmi|km|lk=in|0}} of the [[Moon]]'s surface.
*[[1972]] &ndash; Ceylon adopts a [[Sri Lankan Constitution of 1972|new constitution]], becoming a [[republic]] and changing its name to [[Sri Lanka]].
*  1972   &ndash; Over 400 women in [[Derry]], Northern Ireland attack the offices of [[Sinn Féin]] following the shooting by the [[Irish Republican Army]] of a young British soldier on leave.
*[[1987]] &ndash; [[Hashimpura massacre]] occurs in [[Meerut]], India.
*  1987   &ndash; First ever [[1987 Rugby World Cup|Rugby World Cup]] kicks off with [[New Zealand Rugby Union|New Zealand]] playing [[Italy national rugby union team|Italy]] at [[Eden Park]] in [[Auckland]], New Zealand.
*[[1990]] &ndash; [[Yemen Arab Republic|North]] and [[South Yemen]] are [[Yemeni unification|unified]] to create the Republic of [[Yemen]].
*[[1992]] &ndash; [[Bosnia and Herzegovina]], [[Croatia]] and [[Slovenia]] join the [[United Nations]].
*[[1994]] &ndash; A worldwide trade embargo against [[Haiti]] goes into effect to punish its military rulers for not reinstating the country's ousted elected leader, [[Jean-Bertrand Aristide]].
*[[1996]] &ndash; The Burmese military regime jails 71 supporters of [[Aung San Suu Kyi]] in a bid to block a pro-democracy meeting.
*[[1998]] &ndash; A U.S. federal judge rules that [[United States Secret Service|U.S. Secret Service]] agents can be compelled to testify before a [[grand jury]] concerning the [[Lewinsky scandal]] involving President [[Bill Clinton]].
*[[2000]] &ndash; In [[Sri Lanka]], over 150 [[Sri Lankan Tamil people|Tamil]] rebels are killed over two days of fighting for control in [[Jaffna]]. 
*[[2002]] &ndash; [[Civil rights movement]]: A jury in [[Birmingham, Alabama]], convicts former [[Ku Klux Klan]] member [[Bobby Frank Cherry]] of the [[1963]] murder of four girls in the [[16th Street Baptist Church bombing]].
*[[2010]] &ndash; [[Air India Express Flight 812]], a [[Boeing 737]] crashes over a cliff upon landing at [[Mangalore]], India, killing 158 of 166 people on board, becoming the deadliest crash involving a Boeing 737 until the crash of [[Lion Air Flight 610]].
*  2010   &ndash; [[Inter Milan]] beat [[Bayern Munich]] 2–0 in the [[UEFA Champions League]] final in [[Madrid]], Spain to become the first, and so far only, Italian team to win the historic treble (Serie A, Coppa Italia, Champions League). 
*[[2011]] &ndash; [[2011 Joplin tornado|An EF5 tornado]] strikes [[Joplin, Missouri]], killing 158 people and wreaking $2.8&nbsp;billion in damages, the costliest and seventh-deadliest single tornado in U.S. history.
*[[2012]] &ndash; [[Tokyo Skytree]] opens to the public. It is the [[List of tallest towers|tallest tower in the world]] (634 m), and the second tallest man-made structure on Earth after [[Burj Khalifa]] (829.8 m).
*  2012   &ndash; [[SpaceX COTS Demo Flight 2]] launches a [[Dragon capsule]] on a [[Falcon 9]] rocket in the first commercial flight to the [[International Space Station]].<ref name="Day 4 and beyond NYT">{{cite news |last=Chang |first=Kenneth |date=26 May 2012 |title=First Private Craft Docks With Space Station |page=A12 |newspaper=The New York Times |location=New York |url=https://www.nytimes.com/2012/05/26/science/space/space-x-capsule-docks-at-space-station.html?_r=2&ref=science |url-status=dead |access-date=26 May 2012 |archive-url=https://web.archive.org/web/20210809014738/https://www.nytimes.com/2012/05/26/science/space/space-x-capsule-docks-at-space-station.html?_r=2&ref=science |archive-date=9 August 2021}}</ref>
*  [[2013]] – [[Fusilier]] [[Lee Rigby]] is murdered by 2 [[Islamic extremism|Islamic extremists]] in [[Woolwich]], [[South London|Southeast London]]
*[[2014]] &ndash; General [[Prayut Chan-o-cha]] becomes interim leader of Thailand in a military [[2014 Thai coup d'état|coup d'état]], following six months of political turmoil.
*  2014   &ndash; An [[May 2014 Ürümqi attack|explosion]] occurs in [[Ürümqi]], capital of China's far-western [[Xinjiang Uyghur Autonomous Region|Xinjiang]] region, resulting in at least 43 deaths and 91 injuries.
*[[2015]] &ndash; The [[Republic of Ireland]] becomes the first nation in the world to utilise a public referendum to [[2015 Irish constitutional referendums|legalise gay marriage]].
*[[2017]] &ndash; Twenty-two people are killed at an [[Ariana Grande]] concert in the [[Manchester Arena bombing|2017 Manchester Arena bombing]].
*  2017   &ndash; United States [[President Donald Trump]] visits the [[Church of the Holy Sepulchre]] in [[Jerusalem]] and becomes the first sitting U.S. president to visit the [[Western Wall]].
*[[2020]] &ndash; [[Pakistan International Airlines Flight 8303]] crashes in [[Model Colony, Karachi|Model Colony]] near [[Jinnah International Airport]] in [[Karachi]], Pakistan, killing 98 people.<ref>{{Cite web|last=Ranter|first=Harro|title=ASN Aircraft accident Airbus A320-214 AP-BLD Karachi-Jinnah International Airport (KHI)|url=https://aviation-safety.net/database/record.php?id=20200522-0|access-date=2021-05-09|website=aviation-safety.net|publisher=[[Aviation Safety Network]]}}</ref>
*[[2021]] &ndash; Hypothermia kills 21 runners in the 100&nbsp;km (60-mile) [[Gansu ultramarathon disaster]] in China.<ref>{{Cite news|agency=Associated Press|date=2021-05-23|title=Extreme Weather Kills 21 Runners in Chinese Mountain Ultramarathon|language=en-US|work=Wall Street Journal|url=https://www.wsj.com/articles/extreme-weather-kills-21-runners-in-chinese-mountain-race-11621774245|access-date=2021-05-24|issn=0099-9660}}</ref>
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